Transcription of 11.13 Glass Fiber Manufacturing - US EPA
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11.13 Glass Fiber Manufacturing - US EPA
Glass Fiber General1-4 Glass Fiber Manufacturing is the high-temperature conversion of various raw materials(predominantly borosilicates) into a homogeneous melt, followed by the fabrication of this melt intoglass fibers. The 2 basic types of Glass Fiber products, textile and wool , are manufactured by similarprocesses. A typical diagram of these processes is shown in Figure Glass Fiber productioncan be segmented into 3 phases: raw materials handling, Glass melting and refining, and wool glassfiber forming and finishing, this last phase being slightly different for textile and wool Glass Materials Handling -The primary component of Glass Fiber is sand, but it also includes varying quantities offeldspar, sodium sulfate, anhydrous borax, boric acid, and many other materials. The bulk supplies arereceived by rail car and truck, and the lesser-volume supplies are received in drums and raw materials are unloaded by a variety of methods, including drag shovels, vacuum systems,and vibrator/gravity systems.
Wool Glass Fiber Forming And Finishing - Wool fiberglass is produced for insulation and is formed into mats that are cut into batts. (Loose wool is primarily a waste product formed from mat trimming, although some is a primary product, and is only a small part of the total wool fiberglass produced. No specific emission data for
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